Microsoft 365 Authentication Issues - March 2025

Created by Connor Keef, Modified on Fri, Mar 7 at 3:44 PM by Connor Keef

Background: On Saturday, March 1, 2025, Microsoft pushed a new version of code to their authentication system which had errors. As a result, Microsoft 365 Authentication was broken for a period of roughly two hours. However, users using Apple's Mail app are still unable to receive Microsoft 365 emails due to the way Apple handles authentication.  


Users must force Apple to reauthenticate to Microsoft 365. This is an easy task.

Here are the instructions to fix the issue:


Open the Apple Mail App

Hit the Details button on the bottom bar of Apple Mail

Hit Settings on the popup

Hit Re-enter password

Hit Continue


The account should automatically re-login without having to enter credentials.

The video below shows a demonstration on how to re-login. 


If you do not have the Account Error prompt with the details link, follow these instructions:


Open Settings

Scroll to Apps (at the bottom of Settings)

Scroll to Mail

Click Mail Accounts

Click your ArchOKC.org account.

You will have a button to "Re-enter password."

Follow the steps to re-authenticate. 


If you need to reset your ArchOKC.org email password, please email ithelp@archokc.org

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